Stock Status of Steelhead In California Katie Perry, California Department of Fish and Game - PowerPoint PPT Presentation

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Stock Status of Steelhead In California Katie Perry, California Department of Fish and Game

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Stock Status of Steelhead. In. California. Katie Perry, California Department of Fish and Game ... This ESU extends from the Santa Maria River basin to the ... – PowerPoint PPT presentation

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Title: Stock Status of Steelhead In California Katie Perry, California Department of Fish and Game


1
Stock Status of SteelheadInCaliforniaKatie
Perry, California Department of Fish and Game
2
California steelhead ESUs
3
Southern California ESU
  • This ESU extends from the Santa Maria River
    basin to the United States border with Mexico.
    The range was extended from Malibu Creek to the
    border in July 2002 after California Department
    of Fish and Game found steelhead in Topanga Creek
    (Los Angeles County) and San Mateo Creek (San
    Diego County).

4
Southern California ESU
  • Habitat restoration projects have been
    implemented on a number of the streams in this
    ESU. Most of these projects have restored access
    through removal or redesign of barriers and
    diversions. A major fish passage facility is
    being constructed on the Ventura River at Robles
    Diversion Dam.

5
South-Central California Coast ESU
  • This ESU extends from the Pajaro River basin in
    Monterey Bay south to, but not including, the
    Santa Maria River Basin near the town of Santa
    Maria. Updated adult steelhead counts for the
    Carmel River at San Clemente Dam are available
    from the Monterey Peninsula Water Management
    District Recent counts suggest that the abundance
    of adults has been increasing since the six year
    drought in the late 1980s and early 1990s, but
    the counts remain below 1,000 fish.

6
South-Central California Coast ESU
7
South-Central California Coast ESU
  • The main threats to stocks in this ESU include
    habitat blockages and habitat degradation from
    water management practices (e.g., dewatering
    stream channels, unregulated ground water
    withdrawal) and lagoon breaching

8
Central California Coast ESU
  • This ESU includes coastal basins from the
    Russian River in Sonoma County to Soquel Creek in
    Santa Cruz County. Also included are populations
    in the streams of San Francisco and San Pablo
    Bays. The ESU contains only winter steelhead.

9
Central California Coast ESU
  • Impacts to steelhead in this ESU include
    habitat blockages, urbanization, poor land use
    practices, habitat degradation, and dewatering
    due to irrigation and diversion. Habitat
    restoration efforts have been undertaken in many
    rivers and streams in this ESU.

10
Central Valley ESU
  • This ESU occupies the Sacramento and San
    Joaquin Rivers and their tributaries.
    Historically steelhead were abundant and
    widespread throughout the Central Valley.
    Population estimates vary, but historically they
    may have approached 1 to 2 million adults
    annually. By the 1960s run size had dropped to
    about 40,000 adults.

11
Central Valley ESU
  • Counts of steelhead passing Red Bluff Diversion
    Dam (RBDD) have dropped from a high of almost
    20,000 in 1968 to about 1,500 in 1993. Since 1993
    the gates at RBDD have been raised to facilitate
    passage of winter-run Chinook salmon and counts
    for adults steelhead are no longer possible.

12
Central Valley ESU
13
Northern California ESU
  • ESU includes coastal basins from Humboldt
    County to Mendocino County. It includes summer
    and winter steelhead runs as well as a
    half-pounders. Time-series data of winter
    steelhead in the upper Eel River at Cape Horn Dam
    have declined from a maximum of 9,528 in 1944/45
    to 102 in 2002/03 (combined wild and hatchery).
    Wild steelhead number less than 100

14
Northern California ESU Summer Steelhead Counts,
Middle Fork Eel River(1966 2003)
15
Northern California ESU
  • The main threats to steelhead include poor
    forest practices, poor land use practices, and
    non-native Sacramento pike minnow predation, and
    high water temperatures.

16
Klamath Mountains Province ESU
  • This ESU encompasses steelhead from the Elk River
    in Oregon to the Klamath and Trinity Rivers in
    California.
  • In March 2001 NOAA Fisheries determined that this
    ESU did not warrant listing.
  • In September 2002 there was a massive fish kill
    on the Klamath River. Approximately 33,000
    salmon and steelhead were killed however,
    steelhead were a small percentage of the total
    (650 to 1,500).
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